Correction eyepiece for Zenit 3M

Hello all,

I have a Zenit 3M in very good condition but unfortunately I less and less use it as focussing is getting difficult with the plain frosted glass... Being now far-sighted, I could use it with me glasses but being the only user of this camera, I would rather prefer to adapt a correction eyepiece and get rid of my glasses...

Do you if it does exist or if it is possible to adapt eyepieces from other brands

Thanks for your contributions!

Hi gelios,
just unscrew the black rear ring on you finder and place a correction lens (+ 1 or +2 ?) from your optician shop, under this ring, and then screw it again (the correction glass will be tight between ring and prism ).
An optician can easily fit (cut arround) a lens diameter to your 3M finder.
alain